i all ready swap in a 305 ho and th 400 from a 2.8l motor
i can get a 455 that runs good for $ 300
how hard is it to swap a 455 in
how much faster will it be
thanks

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C man
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motor was a 2.8L v6 now it is
a 305 H.O. with
a th400 trany.

chrisblaster.homestead.com

my car pagewwwhomesteadcomcman.homestead.com/car.html

 

yes. MUUUUUUUUUUUUUUUUUUUUUCH faster than a 2.8

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-Tas
'89 Formula WS.6

Got Beach?

 

I have never done a swap like that. I did go 350 Olds to 400 Chevy. I would say, no. A 455 I think would be a little difficult, and expensive into a Camaro.


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Joshua Johnston
1991 Z-28
350, T-5, K&N, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust, Dynomax Bullet Mufflers, T&R Motorsports custom air intake, Bald tires

 

Which 455? Olds, Buick or Pontiac?

 

It would be a lot easier and cheaper to drop in a BBC 454 than a Buick/Olds/Pontiac 455 or even a Caddy 500. There's no conversion kits available, the transmission won't bolt up plus lots of other fabrication and modifications to do. A BBC is a direct drop in with very little modifications.

There's nothing saying you can't do it, just be prepared to do a lot of custom modifications to get it to work.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block (times are for the current engine)

Best ET on a time slip: 11.447 altitude corrected to 10.99
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Altitude corrected rear wheel HP: 493
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87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

 

Jim Butler Performance in TN sells kits to put Pontiac engines in third gen F-bodies. Motor mounts, headers and transmission adapter plates. Or if you want to, my recommendation is to swap to a THM200-4R transmission and you can use the spohn crossmember/TA mount to do this. The 200-4R is a "universal" bolt pattern case which will bolt to both Chevy and BOPC.

Beware that this is not a swap for the faint of heart, as you'll have to do wiring changes to accomodate the driver's side starter, possible different radiator, no TPI available, etc...

You'll also have to do exhaust fabrication, etc. I realize that you're already familiar with swaps since you went from a v6 to your v8, but realize that a 455 is a large stroke torque motor, and you're likely to also engage in driveline breakage without beefy (and spendy!) upgrades here.

Good luck and let us know if you decide to tackle it!

 

i think is is a 500 cadillac or a 455
a old guy has it
it has about 35000 km on it
but the tranny is no good

the motor will not bolt to my th 400
or will it
how much hp does the motor have i think
it is a 1975 or so
thanks

------------------
C man
-----------------------
motor was a 2.8L v6 now it is
a 305 H.O. with
a th400 trany.

chrisblaster.homestead.com

my car pagewwwhomesteadcomcman.homestead.com/car.html

 

If it's a Cadillac then it's a 500 CID engine. It will not bolt to your THM400 without an adapter plate (Jegs or Summit, around $60).

The Cadillac engine can be built extremely strong and produces GOBS of torque. However, you'll likely have to build custom headers if you don't use power-robbing manifolds as well as fabricate your own motor mounts, etc...

This is a swap to undertake if you enjoy doing this sort of thing, not if you're just looking for cheap power because this one won't be cheap.

 

Putting a big block in your camaro or firebird is possible, but requires some fabrication. This photo is of a project firebird my friends brother is working on... It's a Buick 430 ci big block (block is dimensionally the same as a 455).

[img]https://newragecomputer.tripod.com/baking_soda_hell_1.JPG[img]

The white powder is Baking soda, apparently he left the fuel lines loose. =)

 

If you're doing it because you think that getting the motor for cheap will make it a good deal, you're making a mistake. You could ge the motor for free and still end up spending far more to jam that other one in there than you would just rebuilding your own, especially if you have to do any work to it to make it long-term worthwhile.

On the other hand if you have some fabrication skills & equipment and truly want something different just to be different, then I suppose anything is possible... just don't think that a $300 motor that doesn't fit your car is some kind of a cheap way to (maybe) a faster car.

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"So many Mustangs, so little time..."
ICON Motorsports